Taiwan Semiconductor Corporation MBRS1045CTH

Overview

MBRS1045CTH from Taiwan Semiconductor is a dual-die Schottky barrier surface-mount rectifier in TO-263AB (D2PAK) package, rated for 10 A average forward current, 45 V repetitive peak reverse voltage, and 120 A non-repetitive surge current; it delivers low forward voltage drop (0.70 V at 5 A, 25°C) and supports automotive-grade reliability per AEC-Q101.

For engineers reviewing the MBRS1045CTH datasheet, MBRS1045CTH pinout, MBRS1045CTH application, or MBRS1045CTH equivalent, key selection criteria include its 45 V V_RRM, dual-common-cathode configuration, 2 °C/W junction-to-case thermal resistance, and suitability for high-frequency DC/DC converters requiring low conduction loss and fast switching.

Technical Context

The MBRS1045CTH integrates two independent Schottky diodes in a single TO-263AB (D2PAK) thermally optimized package with common cathode connection. Its guard ring structure provides overvoltage protection, and the matte tin-plated terminals meet J-STD-002 solderability requirements.

Designed for operation from –55°C to +150°C junction temperature, it achieves 10,000 V/μs critical rate of rise of off-state voltage and maintains ≤100 µA reverse leakage at 25°C and rated 45 V reverse bias - enabling stable performance in high-speed freewheeling and reverse battery protection circuits.

Key Specifications

Pinout & Package

Package: TO-263AB (D2PAK), surface-mount, single-row 3-terminal outline with exposed thermal pad. Cathode common to terminal 2; anodes on terminals 1 and 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with VS-MBR1045CT-M3/4W, MBRS1045CTH offers tighter thermal performance and mandatory automotive qualification; versus MBR1045CT, it provides equivalent functionality with distinct manufacturer traceability and packaging logistics - both alternatives maintain full compatibility in layout and thermal design.

Availability

MBRS1045CTH is available at Aetrix Electronics and suitable for automotive lighting, DC/DC converter output rectification, and reverse battery protection requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for MBRS1045CTH includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and power discrete manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.

The MBRS1045CTH belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in harsh-environment automotive subsystems.

FAQ

What is the maximum junction temperature rating for MBRS1045CTH?

The MBRS1045CTH has a maximum junction temperature (T_J) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet Version A2103. This rating enables reliable operation in under-hood automotive environments where ambient temperatures exceed 105°C, provided thermal design maintains case temperature within derating limits. The 2 °C/W R_θJC supports effective heat transfer to PCB copper or external heatsinks.

Is MBRS1045CTH pin-compatible with MBRS1060CTH?

Yes, MBRS1045CTH is pin-compatible with MBRS1060CTH - both use identical TO-263AB (D2PAK) package with three terminals and common-cathode configuration. However, their V_RRM differs (45 V vs. 60 V), so substitution requires verification that 45 V blocking margin meets system transient requirements. Electrical parameters including forward voltage and thermal resistance are closely matched across the MBRS10xCTH family.

Does MBRS1045CTH require special handling for moisture sensitivity?

No, MBRS1045CTH is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/85% RH and processed using standard SMT reflow profiles without baking or dry-pack requirements. This eliminates moisture-related popcorning risk and simplifies manufacturing for high-volume automotive electronics assembly lines.

What is the reverse leakage current specification for MBRS1045CTH at 100°C?

At T_J = 100°C and rated V_R = 45 V, the MBRS1045CTH exhibits a maximum reverse leakage current (I_R) of 15 mA per diode, as specified in the Taiwan Semiconductor datasheet. This value reflects worst-case thermal-electrical behavior under elevated temperature stress and remains well within design margins for reverse battery protection and freewheeling applications where standby current must stay below 100 µA at room temperature.

Can MBRS1045CTH be used in place of a single-diode Schottky like MBRS140?

MBRS1045CTH is not a direct replacement for single-diode devices like MBRS140 due to its dual-die common-cathode configuration and higher current rating (10 A vs. 1 A). While electrically functional in some low-current roles, its TO-263AB footprint and thermal mass are mismatched for MBRS140's SOD-123 package. Use MBRS1045CTH only where dual-channel rectification or 10 A capability is explicitly required.